我是开发新手,在尝试编译以下代码时收到错误消息“Expression Expected”。我究竟做错了什么?

Public Class Form1

    Private Sub btnCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCompute.Click

        Dim Occupation As String = CStr(txtOccupation.Text)
        Dim Bill As Double = CDbl(txtBill.Text)
        Dim Tip As Double = CDbl(txtTip.Text)

        lstOutput.Text = Bill * (1 + if (Tip<1,Tip,Tip/100))

    End Sub
End Class

最佳答案

我猜这是最后一行抛出的异常

lstOutput.Text = Bill * (1 + if (Tip<1,Tip,Tip/100))

您使用了if ... then语句中使用的“if”,但是我敢打赌您的意思是iif,这是一个函数
lstOutput.Text = Bill * (1 + IIf (Tip<1,Tip,Tip/100))

只需添加一个额外的“i”,就可以了

Article explaining the difference between "IF" and "IIF()"

关于vb.net - 我是一个初学者,不明白为什么我的代码会抛出 "Expression Expected",我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/644668/

10-11 00:29